diff -ur sbin/savecore/savecore.c sbin-zlib/savecore/savecore.c
--- sbin/savecore/savecore.c	2005-02-26 01:21:50 +0000
+++ sbin-zlib/savecore/savecore.c	2005-05-06 12:00:06 +0000
@@ -95,7 +95,7 @@
 static int checkfor, compress, clear, force, keep, verbose;	/* flags */
 static int nfound, nsaved, nerr;			/* statistics */
 
-extern FILE *zopen(const char *, const char *);
+extern FILE *gzopen(const char *, const char *);
 
 static void
 printheader(FILE *f, const struct kerneldumpheader *h, const char *device,
@@ -553,7 +553,7 @@
 	if (compress) {
 		sprintf(filename, "%s.%d.gz", istextdump ? "textdump.tar" :
 		    "vmcore", bounds);
-		fp = zopen(filename, "w");
+		fp = gzopen(filename, "w");
 	} else {
 		sprintf(filename, "%s.%d", istextdump ? "textdump.tar" :
 		    "vmcore", bounds);